Documents

Document Number	Title	Agenda Item(s)
WG-FSA-92/01 More Info	Provisional Agenda for the 1992 Meeting of the Working Group on Fish Stock Assessment (WG-FSA) Submitted By: Admin Admin (CCAMLR Secretariat) Request Meeting Document
WG-FSA-92/02 More Info	List of participants Submitted By: Admin Admin (CCAMLR Secretariat) Request Meeting Document
WG-FSA-92/03 More Info	List of documents Submitted By: Admin Admin (CCAMLR Secretariat) Request Meeting Document
WG-FSA-92/04 More Info	Champsocephalus gunnari Lönnberg distribution on South Georgia shelf from inventory survey data collected by AtlantNIRO I.A. Trunov (Russia) Abstract: A total of 8 inventory trawling surveys of the bottom fish were made on South Georgia shelf. Ch.gunnari distribution pattern markedly varied by year which can be attributed to differing survey dates. Most dense Ch.gunnari aggregations observed were mainly in the northern, north-western and north-eastern parts of the island shelf. Near Shag Rocks they could be seen in separate years. Year- Read More Submitted By: Admin Admin (CCAMLR Secretariat) Request Meeting Document
WG-FSA-92/05 More Info	Collected data and stock assessment results for Notothenia squamifrons from Ob and Lena Banks, Division 58.4.4 A.K. Zaitsev and S.M. Pronenko (Ukraine) Abstract: Catch and length/age composition data for Notothenia squamifrons from Ob and Lena Banks, Division 58.4.4, are presented for the period from 1978 to 1990 split years. These data were used in VPA analyses made for each bank separately. The CCAMLR VPA program, version 4.1 was used. The resulted biomass estimates for 1990 are 10.2 x 103 tonnes for Ob Bank and 20.7 x 103 tonnes for Lena Bank. These Read More Submitted By: Admin Admin (CCAMLR Secretariat) Request Meeting Document
WG-FSA-92/06 More Info	By-catch of juvenile Champsocephalus gunnari in krill fishery on the shelf of South Georgia Island G.A. Frolkina, V.I. Latogursky, V.A. Sushin (Russian Federation) Abstract: AtlantNIRO had conducted in 1982-1990 a series of juvenile fish trawl surveys of abundant species around South Georgia Is. Results of these survey were summarised and compared with published data. Juveniles of Champsocephalus gunnari were found to be distributed from the surface to 500 m depth with a maximum density observed at depth between 100 and 200 m. High catches of C. gunnari juveniles Read More Submitted By: Admin Admin (CCAMLR Secretariat) Request Meeting Document
WG-FSA-92/07 More Info	A fish stock assessment survey design for Subarea 48.1 G. Watters (USA) Abstract: There is a lack of information regarding the abundance of exploitable finfish in Subarea 48.1. A comprehensive, bottom trawl survey offish stocks in Subarea 48.1 would make it easier for the Working Group on Fish Stock Assessment to assess the stocks in this region and assist the Scientific Committee in giving management advice to the Commission. A stratified random survey is proposed; the Read More Submitted By: Admin Admin (CCAMLR Secretariat) Request Meeting Document
WG-FSA-92/08 More Info	Length-age composition of the Patagonian toothfish, Dissostichus eleginoides, from the Kerguelen Island area V.G. Prutko and V.N. Chikov (Ukraine) Abstract: Results of length-age composition studies of the Patagonian toothfish, Dissostichus eleginoides, from various fishing grounds of the shelf and continental slope areas of the Kerguelen Islands are presented and discussed in the paper. Detailed results of these studies are compiled in tables such as age-length keys, mean fish length by age, length and age frequency distributions in catches. Read More Submitted By: Admin Admin (CCAMLR Secretariat) Request Meeting Document
WG-FSA-92/09 More Info	Stock size and tac estimation for the Patagonian toothfish, Dissostichus eleginoides, from the Kerguelen Islands area S.M. Pronenko, P.B. Tankevich, V.V. Gerasimchuk and V.N. Chikov (Ukraine) Abstract: Biological data and fishery statistics collected in 1984-1992 were used for stock size and TAC estimation of the Patagonian toothfish, Dissostichus eleginoides, from the Kerguelen shelf area. Method of R. Jones (1964) was used for estimating population size and TAC. Calculations were done for the 1984/85 and 1991/92 seasons where directed fishery for the species took place. Population size of Read More Submitted By: Admin Admin (CCAMLR Secretariat) Request Meeting Document
WG-FSA-92/10 More Info	On the problem of by-catch of juvenile fish in krill fishery C.A. Pankratov and E.A. Pakhomov (Ukraine) Abstract: Studies of by-catch of juvenile fish in krill catches by research vessels were conducted during 1985-1988 in the Kosmonavtov and Sodruzhestva seas (Antarctic Indian Ocean sector). Isaacs-Kidd trawl with an opening area of 6.0 m2 was used. Trawls were taken in the 0-200 m surface layer over the bottom depth range from 100 to 5000 m. In 1988, studies included catches taken by a commercial krill Read More Submitted By: Admin Admin (CCAMLR Secretariat) Request Meeting Document
WG-FSA-92/11 Rev. 1 More Info	A brief outline of the biology of the Antarctic silverfish, Pleuragramma antarcticum Boulenger, 1902 (Nototheniidae) from the Antarctic Indian Ocean V.V. Gerasimchuk (Ukraine) Abstract: The Antarctic silver fish (Pleuragramma antarcticum) is one of the most numerous species in the outer waters of Antarctica. In the Indian sector of the Southern Ocean there are at least three relatively isolated groups. Fish aged from 0+ to 3+ years live in the epi- mesopelagic zone where there are macro aggregations of plankton, while fish aged from 3+ to 12+ years form near-bottom, pelagic Read More Submitted By: Admin Admin (CCAMLR Secretariat) Request Meeting Document
WG-FSA-92/12 More Info	Species composition of by-catch in catches of Electrona carlsbergi taken during commercial/research fishing north of South Georgia Island in 1987-89 VNIRO (Russia) Submitted By: Admin Admin (CCAMLR Secretariat) Request Meeting Document
WG-FSA-92/13 More Info	Pre-spawning and spawning biology of the Patagonian toothfish, Dissostichus eleginoides, around South Georgia (Subarea 48.3) I.N. Konforkin and A.N. Kozlov (VNIRO, Moscow, Russia) Abstract: Samples gathered from research expeditions of the longliners Medvezhy (April-June 1986) as well as Maksheevo and Mirgorod (June-July 1992) have produced new data on the biology of the reproductive part of the Dissostichus eleginoides population in Subarea 48.3. Analysis and synthesis of these data have established the bathymetric distribution patterns for different size-groups of toothfish Read More Submitted By: Admin Admin (CCAMLR Secretariat) Approved By: Admin Admin (CCAMLR Secretariat) Request Meeting Document
WG-FSA-92/14 More Info	Brief report of research carried out by the vessel Mirgorod in the Shag Rocks and South Georgia areas during the period May-June 1992 Russia Submitted By: Admin Admin (CCAMLR Secretariat) Request Meeting Document
WG-FSA-92/15 More Info	Brief report of research carried out by the vessel Maksheevo in the Shag Rocks and South Georgia areas during the period June-July 1992 Russia Submitted By: Admin Admin (CCAMLR Secretariat) Request Meeting Document
WG-FSA-92/16 More Info	CCAMLR workshop on design of bottom trawl surveys (Hamburg, Germany, 16 to 19 September 1992) Submitted By: Admin Admin (CCAMLR Secretariat) Request Meeting Document
WG-FSA-92/17 More Info	Fish stock assessment survey in Subarea 48.3 I. Everson, G. Parkes, S. Campbell (United Kingdom), K.-H. Kock (Germany), J. Szlakowski, D. Cielniaszek (Poland), C. Goss (United Kingdom) and S. Wilhelms (Germany) Submitted By: Admin Admin (CCAMLR Secretariat) Request Meeting Document
WG-FSA-92/18 More Info	Condition factor study of Champsocephalus gunnari I. Everson, G. Parkes, S. Campbell (United Kingdom), K.-H. Kock (Germany), J. Szlakowski, D. Cielniaszek (Poland), C. Goss (United Kingdom) and S. Wilhelms (Germany) Submitted By: Admin Admin (CCAMLR Secretariat) Request Meeting Document
WG-FSA-92/19 More Info	Secretariat stock assessment software Secretariat Submitted By: Admin Admin (CCAMLR Secretariat) Request Meeting Document
WG-FSA-92/20 More Info	Reports of juvenile fish as by-catch in the krill fishery Secretariat Submitted By: Admin Admin (CCAMLR Secretariat) Request Meeting Document
WG-FSA-92/21 Rev. 1 More Info	Remarks on natural mortality of Dissostichus eleginoides in Subarea 48.3 C.A. Moreno and P.S. Rubilar (Chile) Abstract: With samples originated in the Chilean longline fishery of Dissostichus eleginoides of subarea 48.3 (N=7848) after Sparre (1990) the natural mortality was calculated . The Von Bertalanffy parameters obtained independently by three authors were used and considering as variables: fishing site, fishing depth and hook type. It was determined that there was no significative differences, in M Read More Submitted By: Admin Admin (CCAMLR Secretariat) Request Meeting Document
WG-FSA-92/22 More Info	Catch-at-age analysis applied to new fisheries: the case of Dissostichus eleginoides A.V. Zuleta and C.A. Moreno (Chile) Submitted By: Admin Admin (CCAMLR Secretariat) Request Meeting Document
WG-FSA-92/23 Rev. 1 More Info	An iterative model to construct an age-length key to assess the age composition of a new fishery for Dissostichus eleginoides in Chilean waters H. Robotham V. and Z. Young U. (Chile) Abstract: Traditional calculation of catch age composition estimate requires that the age-length data and random length frecuency be sampled from the same population, in other case an age-length key is capable of providing biased estimates of age distribution. By using the iteration algorithm is possible to overcome this limitation. The catch age composition for Dissostichus eleginoides was obteined Read More Submitted By: Admin Admin (CCAMLR Secretariat) Request Meeting Document
WG-FSA-92/24 More Info	Fishing of the Patagonian toothfish (Dissostichus eleginoides) by the Chilean fleet (1991/92) in the Subarea 48.3 (South Georgia Island) and proposed TAC for the 1991/1993 season P.A. Espina, M.A. Araya and V.V. Meniconi (Chile) Abstract: This study analyses fisheries activities carried out by the Chilean longline fishery targeting the Patagonian toothfish (Dissostichus eleginoides) in CCAMLR Statistical Subarea 48.3 (South Georgia Island). From the end of December 1991 until the closing of the fishery on the 10th March 1992, the fleet caught around 80% of the TAC set for this subarea. The catch and effort data and the Read More Submitted By: Admin Admin (CCAMLR Secretariat) Request Meeting Document
WG-FSA-92/25 More Info	Database information on Antarctic fishes: call for cooperation A. Jarre-Teichmann (Germany) Submitted By: Admin Admin (CCAMLR Secretariat) Request Meeting Document
WG-FSA-92/26 More Info	Variations in food composition and feeding intensity of mackerel icefish (Champsocephalus gunnari) at South Georgia K.-H. Kock (Germany), I. Everson (United Kingdom), S. Wilhelms (Germany), S. Campbell (United Kingdom), J. Szlakowski (Poland), G. Parkes (United Kingdom), Z. Cielniaszek (Poland) and C. Goss (United Kingdom) Abstract: The diet composition and feeding intensity of mackerel icefish (Champsocephalus gunnari) around Shag Rocks and the mainland of South Georgia was investigated in January/February 1985, January/February 1991 and January 1992 by analyzing appr. 9,000 stomachs. Main prey items were krill (Euphausia superba), the hyperiid Themisto gaudichaudii, mysids and in 1985 also Thysanoessa species. The Read More Submitted By: Admin Admin (CCAMLR Secretariat) Request Meeting Document
WG-FSA-92/27 More Info	Notes on the use of virtual population analysis for stock assessment of the mackerel icefish, Champsocephalus gunnari (Lönnberg, 1906) in Subarea 48.3 for the 1990/91 and 1991/92 seasons G. Parkes (United Kingdom) Abstract: Following on from the apparent failure to satisfactorily assess the status of the C. gunnari population in Subarea 48.3 at WG-FSA-91 using VPA, attempts were made to re-work the analysis using Laurec-Shepherd and ADAPT tuning techniques, from 1991 back to 1977. The predicted age structure, dominated in recent years by the 1987 year class (1 year olds in 1988), was quite robust, despite the use Read More Submitted By: Admin Admin (CCAMLR Secretariat) Request Meeting Document
WG-FSA-92/28 More Info	The 1992 Dissostichus fishery in Subarea 48.3 D.J. Agnew (Secretariat) and C.A. Moreno (Chile) Submitted By: Admin Admin (CCAMLR Secretariat) Request Meeting Document
WG-FSA-92/29 More Info	A preliminary report on research conducted during experimental crab fishing in the Antarctic during 1992 (CCAMLR Area 48) R.S. Otto and R.A. MacIntosh (USA) Submitted By: Admin Admin (CCAMLR Secretariat) Request Meeting Document
WG-FSA-92/30 More Info	Preliminary analysis of the growth of Dissostichus eleginoides from the austral zone of Chile and South Georgia M. Aguayo H. (Chile) Submitted By: Admin Admin (CCAMLR Secretariat) Request Meeting Document
WG-FSA-92/31 Rev. 1 More Info	Exploratory longline fishing around the Kerguelen Islands (Division 58.5.1). Description of the fishing effort; catchability and target size of Dissostichus eleginoides G. Duhamel (France) Abstract: During the 1990/91 and 1991/92 fishing seasons, two longliners carried out exploratory fishing over the western shelf break of the Kerguelen shelf (Division 58.5.1). Scientific monitoring of fishing carried out by one of these longliners has allowed a description of fishing methods to be made. Bottom longlines are generally used at depths of 400 to 600 m. The mainline (1 to 2 miles long) Read More Submitted By: Admin Admin (CCAMLR Secretariat) Request Meeting Document
WG-FSA-92/32 More Info	CCAMLR glossary of terms Secretariat Submitted By: Admin Admin (CCAMLR Secretariat) Request Meeting Document

WG-FSA-92

Agenda